can_config.h

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#ifndef CAN_CONFIG_H
#define CAN_CONFIG_H

// -----------------------------------------------------------------------------
/* Global settings for building the can-lib and application program.
 *
 * The following two #defines must be set identically for the can-lib and
 * your application program. They control the underlying CAN struct. If the
 * settings disagree, the underlying CAN struct will be broken, with
 * unpredictable results.
 * If can.h detects that any of the #defines is not defined, it will set them
 * to the default values shown here, so it is in your own interest to have a
 * consistent setting. Ommiting the #defines in both can-lib and application
 * program will apply the defaults in a consistent way too.
 *
 * Select if you want to use 29 bit identifiers.
 */
#define SUPPORT_EXTENDED_CANID  1

/* Select if you want to use timestamps.
 * Timestamps are sourced from a register internal to the AT90CAN.
 * Selecting them on any other controller will have no effect, they will
 * be 0 all the time.
 */
#define SUPPORT_TIMESTAMPS              0


// -----------------------------------------------------------------------------
/* Global settings for building the can-lib.
 *
 * Select ONE CAN controller for which you are building the can-lib.
 */
#define SUPPORT_MCP2515                 0
#define SUPPORT_AT90CAN                 1
#define SUPPORT_SJA1000                 0


// -----------------------------------------------------------------------------
/* Setting for MCP2515
 *
 * Declare which pins you are using for communication.
 * Remember NOT to use them in your application!
 * It is a good idea to use bits from the port that carries MOSI, MISO, SCK.
 */
#define MCP2515_CS                              B, 4
#define MCP2515_INT                             B, 2

// -----------------------------------------------------------------------------
// Setting for SJA1000

#define SJA1000_INT                             E, 0
#define SJA1000_MEMORY_MAPPED   1

// memory-mapped interface
#define SJA1000_BASE_ADDR               0x8000          // for ATMega162

/*
   // port-interface
   #define      SJA1000_WR                              D,6
   #define      SJA1000_RD                              D,7

   #define      SJA1000_ALE                             E,1
   #define      SJA1000_CS                              C,0
   #define      SJA1000_DATA                    A
 */

// -----------------------------------------------------------------------------
// Setting for AT90CAN

// Number of CAN messages which are buffered in RAM additinally to the MObs
#define CAN_RX_BUFFER_SIZE              16
#define CAN_TX_BUFFER_SIZE              8

// only available if CAN_TX_BUFFER_SIZE > 0
#define CAN_FORCE_TX_ORDER              1

#endif  // CAN_CONFIG_H